PMID- 25824310 OWN - NLM STAT- MEDLINE DCOM- 20160211 LR - 20150505 IS - 1879-1506 (Electronic) IS - 0003-9969 (Linking) VI - 60 IP - 6 DP - 2015 Jun TI - Porphyromonas gingivalis-induced alveolar bone loss is accelerated in the stroke-prone spontaneously hypertensive rat. PG - 911-8 LID - S0003-9969(15)00040-0 [pii] LID - 10.1016/j.archoralbio.2015.02.012 [doi] AB - Porphyromonas gingivalis (P. gingivalis) is one of the prominent periodontal pathogens and is the most important bacteria involved in the onset and exacerbation of periodontitis. P. gingivalis is an anaerobic, Gram-negative coccobacillus that plays a role in the progression of periodontal disease by promoting alveolar bone resorption. The aim of the present study was to examine P. gingivalis-induced osteoclastic bone resorption in the stroke-prone spontaneously hypertensive rat (SHRSP), in which oxidative stress induced by reactive oxygen species (ROS) is increased. In the present study, we used animals orally challenged with P. gingivalis as a chronic inflammation model. Horizontal bone loss around the maxillary molars was assessed morphometrically. Animals were divided into four groups: (1) P. gingivalis-non-infected Wister Kyoto Rat (WKY), (2) orally challenged with P. gingivalis WKY (WKY + Pg), (3) P. gingivalis-non-infected SHRSP, and (4) orally challenged with P. gingivalis SHRSP (SHRSP + Pg). Alveolar bone resorption was significantly increased in the orally challenged with P. gingivalis groups, and was accelerated in the SHRSP group. Histological analysis revealed that the infiltration of inflammatory cells was absent in all groups. However, the infiltration of osteoclasts was observed in the SHRSP + Pg and SHRSP groups. We examined P. gingivalis-induced alveolar bone loss in both the SHRSP and WKY. The results obtained demonstrated that P. gingivalis-induced alveolar bone loss would be involved in hypertension and stroke animal model, such as SHRSP and/or periodontal disease. CI - Copyright (c) 2015 Elsevier Ltd. All rights reserved. FAU - Tokutomi, Fumiaki AU - Tokutomi F AD - Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan. FAU - Wada-Takahashi, Satoko AU - Wada-Takahashi S AD - Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan. FAU - Sugiyama, Shuta AU - Sugiyama S AD - Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan. FAU - Toyama, Toshizo AU - Toyama T AD - Department of Infection Control, Division of Microbiology, Graduate School of Dentistry, Kanagawa Dental University, Kanagawa, Japan. FAU - Sato, Takenori AU - Sato T AD - Department of Infection Control, Division of Microbiology, Graduate School of Dentistry, Kanagawa Dental University, Kanagawa, Japan. FAU - Hamada, Nobushiro AU - Hamada N AD - Department of Infection Control, Division of Microbiology, Graduate School of Dentistry, Kanagawa Dental University, Kanagawa, Japan. FAU - Tsukinoki, Keiichi AU - Tsukinoki K AD - Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan. FAU - Takahashi, Shun-suke AU - Takahashi SS AD - Department of Oral Science, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan. Electronic address: takahashi.shunsuke@kdu.ac.jp. FAU - Lee, Masaichi Chang-il AU - Lee MC AD - Yokosuka-Shonan Disaster Health Emergency Research Center & ESR Laboratories, Graduate School of Dentistry, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan. Electronic address: lee@kdu.ac.jp. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150221 PL - England TA - Arch Oral Biol JT - Archives of oral biology JID - 0116711 SB - IM MH - Alveolar Bone Loss/*microbiology MH - Animals MH - Bacteroidaceae Infections/*complications/microbiology MH - Disease Models, Animal MH - Male MH - Oxidative Stress MH - Periodontitis/*complications/microbiology MH - Porphyromonas gingivalis MH - Rats MH - Rats, Inbred SHR MH - Rats, Wistar MH - Stroke/*etiology OTO - NOTNLM OT - Bone biology OT - Inflammation and innate immunity OT - Oxidative stress OT - Periodontal medicine OT - Periodontitis OT - Reactive oxygen species (ROS) EDAT- 2015/04/01 06:00 MHDA- 2016/02/13 06:00 CRDT- 2015/04/01 06:00 PHST- 2014/05/08 00:00 [received] PHST- 2014/11/27 00:00 [revised] PHST- 2015/02/13 00:00 [accepted] PHST- 2015/04/01 06:00 [entrez] PHST- 2015/04/01 06:00 [pubmed] PHST- 2016/02/13 06:00 [medline] AID - S0003-9969(15)00040-0 [pii] AID - 10.1016/j.archoralbio.2015.02.012 [doi] PST - ppublish SO - Arch Oral Biol. 2015 Jun;60(6):911-8. doi: 10.1016/j.archoralbio.2015.02.012. Epub 2015 Feb 21.